package com.draven.copy.code.srv;

import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ProgramServiceImpl implements ProgramService {
    public String process(String content) {
        String processedContent = delHTMLTag(content);
        processedContent.replaceAll("<p .*?>", "\r\n");
        // <br><br/>替换为换行
        processedContent.replaceAll("<br\\s*/?>", "\r\n");
        // 去掉其它的<>之间的东西
        processedContent.replaceAll("\\<.*?>", "");
        // 还原HTML
        // content = HTMLDecoder.decode(content);
        return processedContent.replaceAll("&ldquo;","").replaceAll("&rdquo;","");
    }

    public static String delHTMLTag(String htmlStr) {
        String regEx_script = "<script[^>]*?>[\\s\\S]*?<\\/script>"; //定义script的正则表达式
        String regEx_style = "<style[^>]*?>[\\s\\S]*?<\\/style>"; //定义style的正则表达式
        String regEx_html = "<[^>]+>"; //定义HTML标签的正则表达式

        Pattern p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE);
        Matcher m_script = p_script.matcher(htmlStr);
        htmlStr = m_script.replaceAll(""); //过滤script标签

        Pattern p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE);
        Matcher m_style = p_style.matcher(htmlStr);
        htmlStr = m_style.replaceAll(""); //过滤style标签

        Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
        Matcher m_html = p_html.matcher(htmlStr);
        htmlStr = m_html.replaceAll(""); //过滤html标签

        return htmlStr.trim(); //返回文本字符串
    }
    public static String readFileContent(String fileName) throws IOException {
        File file = new File(fileName);
        InputStreamReader isr = new InputStreamReader(new FileInputStream(fileName), "utf-8");
        BufferedReader reader = new BufferedReader(isr);
        StringBuffer sbf = new StringBuffer();
        try { ;
            String tempStr;
            while ((tempStr = reader.readLine()) != null) {
                sbf.append(tempStr+"\r\n");
            }
            reader.close();
            return sbf.toString();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
            }
        }
        return sbf.toString();
    }
}
